Caulking blade



FIG. 1 is a front perspective view of a caulking blade showing my new design;

FIG. 2 is a left elevation view of a caulking blade;

FIG. 3 is a front elevation view of a caulking blade;

FIG. 4 is another front perspective view of a caulking blade; and,

FIG. 5 is a rear perspective view of a caulking blade.

The caulking blade embodying the design is for cutting brick and mortar. 

The ornamental design for a caulking blade, as shown and described. 